The second or sub-typical genus of the Volutes, appears to be represented by this common though elegant species; here figured from one of the largest specimens we have ever seen. The group is chiefly distinguished by the very obtuse but regular termination of its spire, the whorls of which are never distorted or disproportionately inflated: the plaits are always four, and the pillar is never thickened in the middle: the shells of all the typical species are furnished with pointed tubercles; and from their general aspect, do not appear to be covered, like the typical Volutes, by the dilated mantle of the animal, yet the two groups blend into each other by means of the first type of form above indicated. As we have deemed it advisable to employ the name of _Cymbiola_, (hitherto used in a _specific_ sense), as a generic appellation for the whole group, we trust that those who may adopt our views, will hereafter distinguish the _Voluta cymbiola_ of Sowerby, now in the cabinet of Mr. Broderip, by the name of _Cymbiola Broderpia_, in just commemoration of a gentleman whose knowledge of conchology, and whose general labours in the cause of science we have so often had occasion to honour. * * * * * * [Illustration: VOLUTA _cymbium_. _Marbled Melon._] VOLUTA cymbium. _Clouded Melon Volute._ ---- Sub-family Volutinæ _Nob._ (Gen. Melo. Cymba. Voluta. _Brod._) GENERIC CHARACTER. Shell enveloped by the mantle of the animal: oval, ventricose; spire very obtuse, papillary, remarkably short, the whorls (when defined) abruptly lessening. Pillar with from 3 to 4 carinated plaits. TYPES OF FORM.--1. V. fulgetrum. 2. V. cymbium. olla. Neptuni, porcina, proboscidalis, rubiginosa. 3. melo, tessellata, Ethiopica, diadema, armata, nautica. 4. Imperialis, Scapha (?) 5. angulata. _Auct._ ---- SPECIFIC CHARACTER. Type 2. _Shell ovate, marbled with rufous and white, suture channelled, the margin carinated: spire rude, irregular, plaits on the pillar variable._ Voluta cymbium. _Auct. Lam. Sys. 7. 9. 332, Ency. Meth. pl. 386, f. 3._--L'Yet, _Adans. Seneg. pl. 3. f. 1. p. 44._ Cymba cymbium. _Brod. in Sow. Genera._ ----